阅读说明：本技术 一种搁脚板锁止件开关控制机构及装置 (Foot rest locking piece switch control mechanism and device ) 是由 何基 蒋小兵 虞红潮 于 2019-10-17 设计创作，主要内容包括：本发明涉及一种搁脚板锁止件开关控制机构及装置,控制机构包括搁脚板,搁脚板包括本体和盖板,本体和盖板之间形成\容纳腔；活动锁止件,设置在搁脚板的容纳腔内,容纳腔内开有容纳槽,活动锁止件置于容纳槽内,且活动锁止件与容纳槽底部之间设有弹性件；通过按键开关转动,按键开关露出于搁脚板外,而且只需要一个按键开关,通过其按压处于本体容纳腔预制的容纳槽内的活动锁止件,结合弹性件使活动锁止件自由伸缩,因此方便操作,并且方便加工与装配,活动锁止件通过盖板限制与容纳腔的容纳槽内,相比较现有技术而言,加工难度低,且易于装配；控制装置通过活动锁止件与支撑轴上相应的过渡台阶的配合,实现搁脚板不同位置的锁定。(The invention relates to a footrest locking piece switch control mechanism and a device, wherein the control mechanism comprises a footrest which comprises a body and a cover plate, and an accommodating cavity is formed between the body and the cover plate; the movable locking piece is arranged in the accommodating cavity of the footrest, an accommodating groove is formed in the accommodating cavity, the movable locking piece is arranged in the accommodating groove, and an elastic piece is arranged between the movable locking piece and the bottom of the accommodating groove; the movable locking piece is freely stretched and contracted by combining the elastic piece, so that the operation is convenient, the processing and the assembly are convenient, and the movable locking piece is limited in the accommodating groove of the accommodating cavity through the cover plate, so that compared with the prior art, the processing difficulty is low, and the assembly is easy; the control device realizes the locking of different positions of the footrest through the matching of the movable locking piece and the corresponding transition step on the supporting shaft.)

1. A footrest lock piece on-off control mechanism, comprising:

the footrest (200) comprises a body (250) and a cover plate (260) which can be buckled, and an accommodating cavity (210) for accommodating the support shaft (100) is formed between the body (250) and the cover plate (260);

the movable locking piece (300) is arranged in an accommodating cavity (210) of the footrest (200), an accommodating groove (212) is formed in the accommodating cavity (210), the movable locking piece (300) is arranged in the accommodating groove (212), and an elastic piece (230) which is abutted against the movable locking piece (300) and the accommodating groove (212) is arranged between the movable locking piece (300) and the bottom of the accommodating groove (212);

the key switch (220) is rotatably connected to the body (250) through a rotating part (221), the key switch (220) comprises an external force pressing part (223) and a pressing part (222) which is abutted against the movable locking piece (300), the external force pressing part (223) is exposed out of the cover plate (260), and when the external force pressing part (223) is triggered by external force, the movable locking piece (300) is pressed through the pressing part (222) so that the movable locking piece (300) moves towards the bottom of the accommodating groove (212), and meanwhile, the elastic piece (230) deforms to generate reset elastic force; when the external force disappears, the elastic piece (230) releases the elastic force, so that the movable locking piece (300) and the external force pressing part (223) reset, and the head part of the movable locking piece (300) is exposed out of the accommodating groove (212).

2. The footrest lock member switch control mechanism of claim 1, wherein: the pressing part (222) of the key switch (220) presses against the middle position of the movable locking piece (300).

3. The footrest lock member switch control mechanism of claim 1, wherein: the movable locking piece (300) is in a long strip shape, notches (310) are formed in two ends of one side edge of the movable locking piece (300), slotted holes (2121) are formed in two ends of the bottom of the accommodating groove (212), and the elastic piece (230) is located between the notches (310) and the slotted holes (2121) on the same side.

4. The footrest lock member switch control mechanism of claim 3, wherein: a reinforcing groove (240) is fixedly embedded in the part of the accommodating groove (212) between the slotted holes (2121) at the two ends of the accommodating groove (212), the movable locking piece (300) is arranged in the reinforcing groove (240), and the two ends of the movable locking piece (300) are positioned at the outer sides of the two ends of the reinforcing groove (240).

5. The footrest lock member switch control mechanism of claim 3, wherein: the length of the movable locking piece (300) is 10-15 cm.

6. The footrest lock member switch control mechanism of claim 1, wherein: the cover plate (260) is long, and a notch exposed from the external force pressing part (223) is reserved on the cover plate (260).

7. The footrest lock member switch control mechanism of claim 1, wherein: the length of the external force pressing part (223) is 2-4 cm.

8. The footrest lock member switch control mechanism of claim 1, wherein: the key switch (220) is in the middle position of the footrest (200).

9. The utility model provides a bracket lock piece on-off control device which characterized by: the footrest lock piece switch control mechanism comprises a support shaft and the footrest lock piece switch control mechanism as in any one of claims 1 to 8, wherein the support shaft (100) is arranged in the accommodating cavity (210), the support shaft (100) is provided with a sector (130) protruding out of the surface of the support shaft (100) along the radial direction, two transition steps are formed at the junction of the sector (130) and the support shaft (100), and the sector (130) comprises a sector cambered surface (131) attached to the inner wall of the accommodating cavity (210) along the circumferential direction; the head of the movable locking piece (300) is exposed out of the accommodating groove (212) and is abutted with the corresponding transition step according to the position of the movable locking piece; after the head of the movable locking piece (300) is separated from the transition step under the action of the key switch, the movable locking piece (300) moves along the circumferential direction of the fan-shaped cambered surface (131).

10. The footrest lock piece switch control device of claim 9, wherein: the inner wall of the accommodating cavity (210) is provided with a convex clamping block (211), and when the movable locking piece (300) is abutted against one transition step, one end of the convex clamping block (211) is attached to the other transition step.

Technical Field

The invention belongs to the technical field of seats, and particularly relates to a footrest locking piece switch control mechanism and device.

Background

At present, more and more seats with the function of leg rest are available in the market, but the structures of the leg rest generally have the problems of complex structural design, inconvenient operation, large volume, heavy weight, high production cost, small overall design space of the seat, narrow application range and the like; particularly, the turning of the leg rest is usually realized by adopting at least two switches in the existing leg rest structure, and meanwhile, in the turning process, multiple components are turned synchronously, so that the structure is complex, the size is increased, and after the leg rest is folded, the leg rest often occupies a lot of space below the seat, so that the difficulty in setting other functions below the seat is increased, and further the seat is single in function, heavy in appearance and not attractive.

US2013/0181498 discloses a footrest rest assembly for a chair, the leg rest frame 3 being rotated by a pivot 20 provided at the top of the support arm 2, the pivot 20 being pivotally connected between two pivoting holders 11a and 11 b. The pivot holder 11a passes through the pivot holder 11b, the pivot portion 20, the spring 12, and the pawl core 13 before being fixed with the nut 14. One end of the pawl core 13 is formed of a polygonal rotation preventing portion 131, and the polygonal rotation preventing portion 131 is received in a matching polygonal recess receiving portion 21 formed corresponding to the pivot portion 20, so that the spring 12 is received in the recess receiving portion 21 and elastically pushes the pawl core 13 outward.

When the push button 15 is pushed inward, the pin 151 pushes the pawl core 13 to move the pawl portion 132 of the pawl core 13 inward and separate from the pawl portion 113 of the pivot holder 11a, thereby allowing the support arm 2 to rotate. When the push button 15 is released, the pawl core 13 and the push button 15 are repositioned due to the elasticity of the springs 12 and 16. This also causes the pawl portions 132 and 113 of the pawl core 13 and the pivot holder 11a to reengage each other so that the support arm 2 is held at the desired pivot angle.

The locking mechanism is integrated in a small space, the control is realized by pressing the button 15, and the device has the characteristic of miniaturization; however, higher requirements are put on the processing, especially the processing precision of the pawl core 13 is higher, and the assembly is more complicated.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention firstly provides the footrest locking piece switch control mechanism which is convenient to assemble, simple in structure and convenient to operate.

The invention also provides a footrest locking piece switch control device, which is characterized in that a support shaft is contained in a containing cavity of the footrest in the control mechanism, the support shaft is provided with a convex sector, two transition steps are formed at the junction of the sector and the support shaft, the movable locking piece can be in butt fit with the corresponding transition steps according to the position of the movable locking piece, and the movable locking piece can be controlled only by a key switch.

In order to achieve the purpose, the invention adopts the following technical scheme:

a footrest lock piece switch control mechanism comprising:

the footrest comprises a body and a cover plate which can be buckled, and an accommodating cavity for accommodating the supporting shaft is formed between the body and the cover plate;

the movable locking piece is arranged in an accommodating cavity of the footrest, an accommodating groove is formed in the accommodating cavity, the movable locking piece is arranged in the accommodating groove, and an elastic piece which is abutted against the movable locking piece and the accommodating groove is arranged between the movable locking piece and the bottom of the accommodating groove;

the key switch is rotatably connected to the body through the rotating part and comprises an external force pressing part and a pressing part abutted against the movable locking piece, the external force pressing part is exposed out of the cover plate, when the external force pressing part is triggered by external force, the movable locking piece is pressed through the pressing part, so that the movable locking piece moves towards the bottom of the accommodating groove, and meanwhile, the elastic piece deforms to generate reset elastic force; when the external force disappears, the elastic piece releases the elastic force, so that the movable locking piece and the external force pressing part reset, and the head of the movable locking piece is exposed out of the accommodating groove.

Preferably, the pressing part of the key switch presses against the middle position of the movable locking piece. Make the effort be located the intermediate position of activity locking piece, whole activity locking piece atress is even, high-efficient stability when having increased a key locking, unblock, and user experience is good.

Preferably, the movable locking piece is in a strip shape, notches are formed in two ends of one side edge of the movable locking piece, slotted holes are formed in two ends of the bottom of the containing groove, and the elastic piece is located between the notches and the slotted holes on the same side. The elastic component is located between the notch and the slotted hole on the same side, so that the elastic component is not easy to deviate and other unstable position changes, the acting force is uniform, and the stability of the elastic component during pressing and resetting actions is ensured.

Preferably, a reinforcing groove is fixedly embedded in the accommodating groove part between the groove holes at the two ends of the accommodating groove, the movable locking piece is arranged in the reinforcing groove, and the two ends of the movable locking piece are positioned at the outer sides of the two ends of the reinforcing groove.

When the footrest is unlocked and locked, the movable locking piece performs frequent displacement motion on the accommodating groove, so that the accommodating groove is easily abraded, and therefore, the reinforcing groove is tightly matched in the accommodating groove, the firmness of the accommodating groove is favorably improved, the service life is prolonged, and the stability of the movable locking piece during displacement is favorably improved; simultaneously, arrange slotted hole and elastic component in the strengthening groove outside, can simplify the structure of strengthening groove, the wearing and tearing to the holding tank are mainly because the main part of activity locking piece in addition, and the structure influence of activity locking piece both sides is little.

Preferably, the movable locking member has a length of 10-15 cm. Therefore, the assembly is convenient, and the length of the movable locking piece is enough to be conveniently matched with the key switch and the elastic piece.

Preferably, the cover plate has an elongated shape, and a notch is formed in the cover plate to expose the external force pressing portion.

Preferably, the length of the external force pressing part is 2-4 cm. Thus, the user can conveniently touch and press the button.

Preferably, the key switch is located at a middle position of the footrest.

A footrest locking piece switch control device comprises a support shaft and the footrest locking piece switch control mechanism, wherein the support shaft is positioned in an accommodating cavity, the support shaft is provided with a sector protruding out of the surface of the support shaft along the radial direction, two transition steps are formed at the junction of the sector and the support shaft, and the sector comprises a sector cambered surface attached to the inner wall of the accommodating cavity along the circumferential direction; the head of the movable locking piece is exposed out of the accommodating groove and is abutted with the corresponding transition step according to the position of the movable locking piece; after the head of the movable locking piece is separated from the transition step under the action of the key switch, the movable locking piece moves along the circumferential direction of the fan-shaped cambered surface.

When the movable locking piece is jointed and abutted against the transition step, the footrest is in a locked state and cannot be turned over; when the movable locking piece is separated from the transition step, the footrest is in an unlocking state, the movable locking piece slides along the fan-shaped cambered surface and rotates, and the footrest rotates around the supporting shaft.

Preferably, the inner wall of the accommodating cavity is provided with a convex clamping block, and when the movable locking piece is abutted against one transition step, one end of the convex clamping block is attached to the other transition step. The phenomenon that the footrest slightly rocks, overturns after the locking has been avoided in the setting of protruding fixture block, guarantees that the locking state of footrest is more stable, reduces the error, guarantees the travelling comfort, improves user experience.

Compared with the prior art, the invention has the beneficial effects that:

according to the switch control mechanism of the footrest locking piece, the key switch is rotated, the key switch is exposed out of the footrest, only one key switch is needed, the movable locking piece in the accommodating groove prefabricated in the accommodating cavity of the body is pressed through the key switch, and the movable locking piece is enabled to freely stretch and retract by combining the elastic piece, so that the switch control mechanism is convenient to operate and convenient to process and assemble, and the movable locking piece is limited in the accommodating groove of the accommodating cavity through the cover plate.

The structure for locking and unlocking the footrest is integrated at one end of the footrest, and the support shaft and the movable locking piece which are arranged at one end of the footrest in an embedded mode, so that the structure is very compact, the occupied space is small, the modular design is more convenient, the structure is more flexible, and the operation is convenient.

Drawings

FIG. 1 is a schematic view of the seat portion and the footrest in a fitted connection with the footrest structure and with the footrest in an open state according to the embodiment;

FIG. 2 is a schematic view of the structure of FIG. 1 from another angle;

FIG. 3 is a schematic view of the seat portion coupled to the footrest structure with the footrest collapsed under the seat portion according to the embodiment;

FIG. 4 is a schematic view of the structure of FIG. 3 at another angle;

FIG. 5 is a schematic view of an exploded structure among the leg rest structure, the support rod and the sleeve of the embodiment;

FIG. 6 is a partial schematic view of the leg rest structure, the support rod, and the sleeve according to the embodiment;

FIG. 7 is an enlarged view of portion A of FIG. 6;

FIG. 8 is a schematic view of a partially exploded configuration of an embodiment footrest;

FIG. 9 is an enlarged view of the portion B of FIG. 8;

FIG. 10 is a schematic view in section of a portion of the leg rest structure of an embodiment;

FIG. 11 is an enlarged view of the portion C of FIG. 10;

FIG. 12 is a schematic view of a portion of the internal structure of a leg rest structure, support bar, and sleeve of an embodiment;

FIG. 13 is an enlarged view of the portion D of FIG. 12;

FIG. 14 is a schematic view of another internal structure of a leg rest structure, a support rod, and a sleeve in a partially mated relationship according to an embodiment;

FIG. 15 is an enlarged view of section E of FIG. 14;

FIG. 16 is a schematic view of the movable locking member, the reinforcing groove, the elastic member, and the key switch according to the embodiment;

FIG. 17 is a schematic view of the structure of FIG. 16 at another angle;

FIG. 18 is a schematic longitudinal cross-sectional view of FIG. 16 at the center thereof;

FIG. 19 is a schematic cross-sectional view of the body and cover, the key switch, the movable locking member, the receiving groove, and the supporting shaft of the embodiment;

FIG. 20 is a schematic view showing the inner structure of the footrest in a locked state when the footrest is folded in the embodiment;

FIG. 21 is an enlarged view of portion F of FIG. 20;

FIG. 22 is an internal structural view showing an unlocked state in which the movable lock member is pressed in the reinforcing groove in the embodiment;

FIG. 23 is an enlarged view of the portion G of FIG. 22;

FIG. 24 is an internal schematic view of the footrest overturning process in the unlocked state according to the embodiment;

FIG. 25 is an enlarged schematic view of the portion H in FIG. 24;

FIG. 26 is a schematic view showing the internal structure of the footrest in the locked state during the turnover process of the footrest in the embodiment;

FIG. 27 is an enlarged view of section I of FIG. 26;

FIG. 28 is an internal view of the embodiment with the movable latch partially ejected out of the reinforcement slot and engaged with the second locking position and the footrest in a locked position with the footrest fully extended;

FIG. 29 is an enlarged view of the J portion of FIG. 28;

reference numerals: the support shaft 100, the first locking position 110, the second locking position 120, the sector 130, the sector arc 131, the footrest 200, the accommodating cavity 210, the protruding fixture block 211, the limiting surface e2111, the limiting surface f2112, the accommodating groove 212, the slot 2121, the key switch 220, the rotating part 221, the pressing part 222, the pressing part 223, the elastic part 230, the reinforcing groove 240, the body 250, the first accommodating cavity 251, the cover plate 260, the second accommodating cavity 261, the root end 270, the free end 280, the outer surface 291, the inner surface 292, the movable locking part 300, the notch 310, the limiting surface c320, the limiting surface d330, the support rod 400, the seat 500, the accommodating position 510 and the sleeve 600.

Detailed Description

The following describes a detailed embodiment of the present invention with reference to the accompanying drawings.

The present embodiment is described with reference to the orientation of the various components, such as front, rear, etc., in a normal use condition with the user seated in the seat.